Abstract 680: Prognostic impact of OPN and DKK1 in patient of hepatocellular carcinoma after hepatectomy

The new biomarkers are essential for improving the survival and prognosis of hepatocellular carcinoma(HCC) patients. Alpha-fetoprotein(AFP) is the most widely used biomarker. But the low sensitivity and specificity limits its clinical application. Recent study validated the diagnostic capability of osteopontin(OPN) and dickkopf-1(DKK1) and assessed the combination of AFP, DKK1, and OPN as a panel for the diagnosis of HCC. Based on these previous studies, we hypothesized that combination of OPN and DKK1 can be used to as a marker for prognosis to patient of HCC after hepatectomy. From January 2006 to December 2008, patients undergoing hepatectomy for hepatocellular carcinoma were screened serum that has been stored in the Bank of tumor. To target the selected patient, it was confirmed that the remaining tissue specimen is stored after diagnosis. Serum of the patients was used to investigate the OPN and DKK1 by ELISA. In the paraffin block were prepared unstained slide and OPN and DKK1 level checked by IHC. It examined the correlation between prognosis and biomarkers through statistical analysis. AFP, OPN(serum level) and DKK1(serum level) are an independent prognostic factor for overall survival(OS) in HCC after hepatectomy(n=60, P=0.0204, 0.0167 and 0.0455 respectively). New biomarkers combinations based on the AFP existing biomarker are showed a falling curve of the overall survival(OS) and disease-free survival(DFS) in Kaplan Meier curve. In conclusion, combination of OPN, DKK1 and AFP as a biomarker could support the correct diagnosis for HCC after hepatectomy. Note: This abstract was not presented at the meeting. Citation Format: YunSung Seo, Hye Rim Byeon, In Hae Park, Seung Duk Lee. Prognostic impact of OPN and DKK1 in patient of hepatocellular carcinoma after hepatectomy [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 680. doi:10.1158/1538-7445.AM2017-680